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View Full Version : J-Spec to VVTi/UK Spec conversion?


Mike_Mac
28-06-07, 18:49
Hi all,

This is just to canvas opinion and find out what my options are.

My engine is currently knackered and, although my Turbos are strong. I will be on a very tight budget for a replacement engine when the time comes.

The easy option is to swap a standard J-Spec engine in there, which is nice and simple, but to widen my options I am looking at the possibilities of the following if I find the right engine:

1. VVTi conversion. How much extra work and parts will be needed?

2. UK engine with my J-Spec Turbos on it. Will they fit? Will the engine work with a J-Spec ECU. What else could trip things up?

The only reason I say UK with J-Spec Turbos is that I like my J-Specs and also have a feeling that UK tubbies would cause more complications when plumbing the engine in. If it's simple then I might be persuaded.:d

Any thoughts from the more technical than me guys, especially with regards to cost? this will not be done on the cheap, but I don't have too much room for maneouvre. Thanks. :search:

JustGav
28-06-07, 20:05
VVTi is not an easy option.. do a search, the same thing keeps coming up, a lot more than just an engine change with VVTi.

UK engine and Jspec engine I believe are the same, it would the injectors/turbo/ecu that is different (yes there are some additional things, but I believe the lumps are the same)

Alex
28-06-07, 20:09
Just replace like for like - there is no benefit worth the effort/cost in the others.

JustGav
28-06-07, 20:12
Just replace like for like - there is no benefit worth the effort/cost in the others.

Agreed, a lot of work for a VVTi, not done a UK so can't comment... but VVTi=lots of work and other fiddly bits..

Mike_Mac
28-06-07, 21:13
Ok thanks for that guys. My main though was that if I could swap my turbos for the ones on a UK spec then all I'd need to do is compensate for the larger injectors, but if that meant an aftermarket ECU then it's not really an option.